I agree there is something fishy and most likely it is the download of their trading platform.
These days there is no reason for an installed application – it can and should be done in the browser.
I also tried researching the puproted key people like Halyna and they do nto seem to have an y longevity on LinkedOn or other platforms.
Also, many of the users seem to be bots … the things they say are wierd (at least to me). and designed to make you think there are happy people on the platform.
My opinion – steer clear of downloading anything or giving them anything more than your WhatsApp contact.